Handsaw



March 29 1927' c. PATTERSON HANDSAW Filed Julyl 14, 1926 Earl PaTLEISnn.

Patented Mar. 29, 1927.

UNITED STATES- PATENT OFFICE.

'CARL PATTERSON, 0F ALBUQUERQUE, NEW MEXICO.

HANDSAW.

Application med July 14,

This invention relates to tools and more particularly to a handsaw of the type used form the handle of the saw lthat a ruler or the like may be engaged with the handle and extend transversely of the blade and project therefrom in predetermined angular relation to the back edge of the saw blade. y

Another obJect of the invention' is yto permit a scriber to be removably held in the handle vof the vsaw where it may be conveniently reached when needed. 'lhe invention is illustrated in the accompanying drawing, wherein' Fig. l is a view showing the improved -saw in side elevation;

Fig. 2 is` a transverse sectional view vthrough the blade of the saw lookingy towards the handle thereof;

Fig. 3 is a View in elevation of an vauxiliary blade adapted to be removably secured l to the blade of the saw and together therewith form a try-square; and v Fig. 4 is an enlarged sectional view showing the manner of securing the auxiliary l blade to the saw blade.

'Ihe saw forming the subject-matter of vthis invention includes a blade 1 which is similar to an ordinary saw blade except that it is provided along its back or rear edge'2f with scale markings 3 and at its forward or l outer end is provided with openings 4 and the saw blade to 1926. serial No. 122,419.

formed with scale `markings 8 to represent lnches, as show n Fig. 3. A longitudinally extending sl1t 911s cut from one end of the auxiliary blade and is of such length that the freeend portion of the saw blade having the openings 4 formed therein may be disposed in'sthe slit 9 with the openings 4 registering with openings 10 and `11 formed in the. auxiliary blade. The openings`10 have their outer portions enlarged so that the heads of the securing screws 12 may be countersunk, as shown in Fig. 4, and the openings l1 are threaded in' order to engage the threads of the screws. It will thus be seen that, when the auxiliary blade is disposed in crossed and straddling relation to the free end ofthe saw blade and the securing screws putin place, the auxiliary blade will be firmly secured and prevented from having movement out of apposition at right angles to the back or rear edge 2 of the saw blade. Therefore, the auxiliary blade will cooperate with lform a large try-square which may be employed to engage and mark lumber to be cut.. The notch 5 formed in the free end of the saw blade is intended to' receive a small nail driven into a board or Vfloor so that the saw blade may be swung about the nail and a circle marked upon the board or floor through the medium of a pencil or other scriber engaged with the` rear edge of the saw blade at the pro er distance from its free end. It will be o vious that, if. the pencil is placed three inches from the free end of the saw blade and the blade swung about the nail, a circle six inches in diameter will be marked u'pon the board.

The handle 6, which is preferabl. formed of wood and straddles the rear en portion of the saw blade, usual fasteners 18 and has an opening 14 formed therein in order-to provide a hand grip l5 and passage through which the lin, gers are passed. At its forward end the handle is provided with an edge yface 16 which extends at an angle of ninety degrees to the back edge of' the blade 1 and the lower forward portion of the handle is formed with an edge face 17 which preferably ex,-

`tends at an angle of forty-five degrees and intersects the edge face 16. At each side of the saw `blade the edge faces 16 and 17 are covered by facing strips 18 which are of sullicient width to project from the side faces of the handle. A side edge face of a board maybe engaged by one of the facing is firmly secured by the strips and J(he blade of the saw caused to extend across a board either at right angles to theA edge face of the board or at an angle of forty-five degrees thereto and the saw employed as a square or gage lin order to mark the board for cutting. It will be obvious that scale markings may be rovided upon both side faces of the saw lade so that it may be readily employed to cut the stringers forming a portion of a stairway. It will also be obvious that a ruler or other straight edge could be placed against a selected portion of one of the facing strips and caused to project from the back edge of the saw blade at a desired angle thereto. Levels 19 and 20 are embedded in the handle in facing relation to an end and one side of the opening 14, and the hand grip 15 has been drilled to provide a pocket 21 into which a scriber 22 may be inserted. The scriber 22 is preferably formed of metal and is provided with an enlarged head 23 which limits its inward lmovement into t-he pocket and further permits it to be easily Withdrawn when its use is necessary. It

will thus be seen that there has been prol videda saw which may be used as an ordinary cutting saw and may also be employed by a carpenter to mark and gage Work to be cut. By reversingl the auxi iary blade T so that it projects from the rear edge of the saw blade, a large try-square will be formed.

Having thus described the invention, I claim:

A saw comprising a blade, and a handle secured to one end portion of the blade, said blade having a straight rear edge, an auxiliary blade extending transversely of the saw blade and having one end portion formed with a longitudinally extending slot providing arms to overlap opposite side faces of the saw blade, the savs7 blade having openings formed in its free end portion and the arms of the auxiliary blade being provided with alined openings to register With the openings in the saw blade, and fasteners passed through the registering openings of the blades to releasably secure the auxiliary blade to the saw blade at right angles to its back edge.

In testimony whereof I affix my signature.

CARL PATTERSON. [1.. 5.] 

